NTSB Identification: NYC86FA183.
The docket is stored on NTSB microfiche number 31841.
Nonscheduled 14 CFR
Accident occurred Thursday, July 17, 1986 in STATEN ISLAND, NY
Aircraft: BELL B-222A, registration: N404WW
Injuries: 3 Uninjured.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

THE HELICOPTER, ON A FAR 135 FLIGHT WAS IN CRUISE FLT AT 900 FT. THE PLT WAS CHECKING FOR CALLED VFR TRAFFIC AND THE CO-PILOT WAS OCCUPPIED WITH THE RNAV WHEN A LOUD BANG WAS HEARD AND A SUDDEN YAW WAS FELT. BOTH CREW MEMBERS STATED THEY REACTED AS INSTRUCTED AND IN THE PROCESS ANOTHER ENGINE FAILED. A WATER DITCHING WAS UNAVOIDABLE. INSPECTIONFAILED TO REVEAL ANY MECHANICAL FAILURE/MALFUNCTION OF THE #1 ENG. THE #2 ENG HAD A POWER TURBINE BLADE FAILURE.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

TURBINE ASSEMBLY,TURBINE BLADE..FAILURE,TOTAL

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

TURBOSHAFT ENGINE..FAILURE,PARTIAL

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

PROCEDURES/DIRECTIVES..NOT PERFORMED..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

DIVERTED ATTENTION..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

WRONG ENGINE SHUTDOWN..PERFORMED..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

ROTOR RPM..NOT MAINTAINED..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

IMPROPER USE OF PROCEDURE..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

PROCEDURES/DIRECTIVES..NOT FOLLOWED..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

EMERGENCY PROCEDURE..IMPROPER..PILOT IN COMMAND

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